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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum (src_forum@alionscience.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Bob Bouvier (bbouvier@csc.com )
Organization:BMPCOE (CSC)
Date posted: Mon Feb 8 12:48:58 US/Eastern 1999
Subject: Parts Derating in NAVSEA TE000-AB-GTP-010
Message:
I'm interested in your opinions on the NAVSEA Parts Requirements document and, in particular, on what it has on parts derating. I am not familiar with RAC materials on the subject so I'd like to know how the NAVSEA info. compares with what RAC puts out in terms of scope, details, etc. but in a general way, please. Is there redundancy? Is there anything in it that could be removed? What's missing? Any and all opinions are welcome. Thanks very much.


Reply:

Subject: Derating Criteria
Reply Posted by: Bruce Dudley (bdudley@alionscience.com )
Organization: Reliability Analysis Center
Date Posted: Thu Feb 11 15:42:17 US/Eastern 1999
Message:
The Reliability Analysis Center does not have a specific report on individual part derating parameters as is specified in the Navy TE000-AB-GTP-010 document. Our derating procedure is highlighted in the Reliability Toolkit , Commercial Practices Edition on page 95 to 97. This procedure is for high level derating, only citing one or two parameters for a group of parts. The purpose is to give a general starting point for builders to consider in their design, not dictate detailed requirements for each part and parameter. Most user are commercial equipment builders and cannot dedicate a lot of time analyzing for many individual parameters. If you desire a side by side comparison of a number of derating practices (14 including your document), I have the data in table format but not on the computer.


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